US Bridges

Copper St. over Trib to Walnut CR

Fair

Macon County, Missouri · S 2 T 60 N R 17 W · Structure no. 32547

Built
2007
18 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
48 ft
1 main span
Daily traffic
15
2024 count
Owner
County
County Highway Agency

About this bridge

Copper St. over Trib to Walnut CR is a steel stringer/multi-beam or girder carrying Copper St. over Trib to Walnut CR in Macon County, Missouri. It was built in 2007, so it is 18 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 15 vehicles a day, roughly 10% of them trucks, projected to reach 17 by 2044. The structure is 48 ft (14.6 m) long and 23 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCopper St.
CrossesTrib to Walnut CR
LocationS 2 T 60 N R 17 W
RouteCounty Highway 15
CountyMacon County
StateMissouri
Coordinates40.03712, -92.76364
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating102.2 US tons
Inventory rating61.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span47 ft (14.3 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2024)
Projected traffic17 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Copper St. over Trib to Walnut CR built?

It was built in 2007, making it 18 years old in 2025.

What condition is Copper St. over Trib to Walnut CR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2024.

How much traffic does Copper St. over Trib to Walnut CR carry?

About 15 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Copper St. over Trib to Walnut CR?

The structure is 48 ft (14.6 m) long with a longest span of 47 ft (14.3 m) and a deck 23 ft wide.

Who owns Copper St. over Trib to Walnut CR?

It is owned by the County Highway Agency.